Electrical Manipulation of a Single Nanowire by Dielectrophoresis

Abstract

Nanowires (NWs), due to their unique highly anisotropic characteristics, hold a great promise to be used in wide technological fields, such as building blocks for data storage and memory, advanced scanning probes, and biotechnological applications. In addition, given the high sensitivity to their environment, NWs can be used as sensor for a number of applications. The fabrication and electrical characterization of NW-based devices can be achieved after proper placing of NWs between electrodes, which represents one of the major challenges in this field. The dielectrophoresis (DEP) method can be used to trap electrically neutral NWs by the application of an alternating electric field between a pair of electrodes. Here, we present a systematic study of DEP parameters as well as electrodes geometry for NW deposition. This method presents a suitable protocol for deposition in a useful and coherent fashion of post-growth electrodeposited NWs and further electrical characterization. This can be used for investigation of the fundamental transport properties of individual NWs and fabrication of NW-based devices, such as sensors and field-effect transistors.

Biosensors Based on SOI Nanowire Transistors for Biomedicine and Virusology

“…Since the polarizability of bioparticles reflects their uniqueness and is determined by their shape/size (see expression (1)), the use of the DEPh effect opens up wide-ranging possibilities for manipulating the location of the analyte and background particles between the DEPh-electrodes. Currently, the successful use of DEPh for manipulating nanomaterials, Si-NWs [14], bioparticles, including their separation in solutions [13], self-formation of interfaces between NWs and bioparticles (bio/nanointerfaces) [15], etc., is well known.…”

Frequency dependence dielectrophoresis technique for bridging graphene nanoribbons

“…One possible approach of selecting sGNRs from CNTs is the dielectrophoresis (DEP) technique, [21][22][23] which is the method for nanomaterial alignment that avoids contamination. DEP is applied both in the alignment of nanowires from metal to insulator and in separating materials of differing electrical properties such as metal and semiconductive CNTs (mCNTs and sCNTs, respectively).…”